The W2 was extensively covered by many magazines, and it was thoroughly tested by Motor Trend magazine and the British automotive television program Top Gear. However, Top Gear was ordered not to perform a top speed test on it, even though Vector claimed the car was capable of 230 mph.
AutoWeek published an article comparing Wiegert to Peter Pan and compared the Vector headquarters to Neverland. Wiegert sued AutoWeek and the article's author, Dutch Mandel. Courts cleared AutoWeek and Mandel. Wiegert appealed the verdict, and AutoWeek settled to keep legal bills from mounting.
In 1989, Wiegert's company, now known as the Vector Aeromotive Corporation, began production of the W8, an evolution of the W2. Financial backing came from public stock offerings and various lawsuits including suits against the Goodyear Tire Company (trademark infringement with the Vector brand of tires) and Vantage cigarettes. Two W8 prototypes were made, of which only one ran.
One black W8 was sold to famous tennis player Andre Agassi. Since Vectors were hand built, each took some time to finish, but Agassi demanded that the company deliver his W8 as soon as possible.
Vector delivered the car as promised. Company representatives told him that he could display it, but warned him not to drive it until the final work was completed. He ignored the warning, though, and drove it hard around his yard. As a result, the car's 600+ hp engine backfired, causing the destruction of the exhaust system and the rear interior.
Wiegert and Vector Aeromotive refunded Agassi's US$455,000 purchase price in what would prove a failed attempt to avoid negative publicity from the media.
Repairs on Agassi's W8 were finished, and the car was resold. A total of 17 Vector W8 cars were built for public sale.
The Vector W8 did manage a brief foray into the spotlight of the film-going general public when a red version of the car was used in the 1993 film Rising Sun, driven by a Japanese businessman.
Megatech moved Vector from its Wiegert-owned headquarters building in Wilmington, California, to Jacksonville, Florida, where the company could share office space with fellow MegaTech-owned automaker Automobili Lamborghini.
The new Vector Aeromotive Corporation created a car called the Vector M12, which was loosely based on the WX-3 but powered by a version of the Lamborghini Diablo V12 engine. Consequently, some work on the M12 was handled by Lamborghini. As such, many of the essentially American "spirit" characteristics of previous editions did not carry over to the M12.
Production of the M12 began in 1995 in Jacksonville, Florida, and the car was introduced at the 1996 North American International Auto Show in Detroit, where Vector displayed two examples. Production was shuttered late in 1996 when the $189,000 cars did not meet projected sales targets. Production resumed after MegaTech sold off Lamborghini (to Audi) and Vector (to management). By early 1999, only 14 M12s were produced; Lamborghini did not fulfill its contracted delivery of motors due primarily to Vector's inability to pay for them. It was alleged that Tommy Suharto, son of Indonesian strongman General Suharto and a MegaTech principal, illegally embezzled from the company for his own personal gain.
It should be noted that, according to one story, Lamborghini took a W8 for payment for the engines, but since the W8 in question was still Weigert's property at the time, he took the case to court. He won it back, although Lamborghini, now owned by Volkswagen, has since refused to give the car back.
Financial troubles within Vector were not helped by continued negative press coverage, including Jeremy Clarkson of Top Gear calling the M12 the worst car ever made.
Vector reduced the cost of the M12 and created the SRV8. This new model had a Corvette engine and a Porsche transaxle. Within days of the SRV8's public introduction, the company shut its doors after having built only one prototype.
Since the company's closure, rumors began to circulate about Wiegert developing a new car to bring Vector back to life with a new model called the WX8. At the Concorso Italiano on August 18 2006, Wiegert showed up in the V-8 Avtech prototype with Keith Rosenberg (a friend). He confirmed that he had begun work on another supercar.
Wiegert had the Avtech on display at the Rodeo Drive Concours d'Elegance on June 17, 2007. His business card for Vector Motors Corporation (Wilmington, CA) has him titled as "Chairman and CEO." He also announced plans to debut his new prototype at the 2008 Los Angeles Auto Show.
At the L.A. Auto Show, Wiegert presented a prototype of the WX8. The car is powered by a supercharged 10-liter all-aluminum V8 with a projected output of , which would make it more powerful than the Bugatti Veyron and the SSC Ultimate Aero TT. Vector claims that the WX8 has a top speed of and a 0-60 time of just under three seconds .