The North American Touring Car Championship
Yes, even America embraced the Supertouring regs that were all the rage in the 1990s, albeit briefly. Funded by Jerry Forsythe and run from Tampa by Roger Elliott (BTCC boss Alan Gow also providing input), the series kicked off in 1996 as a support series to the road and street course rounds of the CART Series.
us.motorsport.com
Right away, interest from teams and manufacturers was lacking, only 10 cars turned up for the first meeting of the season at Lime Rock Park and only Chrysler was really properly committed via their Dodge brand. Although 8 different manufacturers took part in at least one meeting in that first season, only 4 were works entries and the number of entries all season peaked at 12. Not surprisingly, the series was dominated by American drivers with only Britain's Peter Hardman denying them a clean sweep of wins in Race 2 at Toronto. The most notable entries that year were CART stalwarts PacWest Racing running the late Mark Donohue's son David and ex-Indycar driver Dominic Dobson in Dodge Stratus' and Mario Andretti's other son Jeff in a Ford Mondeo but the title went to Randy Pobst in a Honda Accord.
The series survived into 1997 but, once again, never attracted more than 12 cars. There was even less interest from teams and manufacturers this time around, only 3 works teams and 7 different makes took part. At least there were more meetings (9 as opposed to 8) and more drivers took part (21 as opposed to 20 the previous year) and 6 of them did the full season (as opposed to just 4 in 1996) and the series was popular with fans. The title eventually went to Donohue, but if not for a disqualification at Detroit and missing the Portland rounds, Australian Touring Car ace Neil Crompton could have spoiled the party for the Americans as his 7 wins handsomely outnumbered everyone else and ensured a clean sweep of NATCC Manufacturer's titles for Honda. The only other notable competitor that year was South African lady driver Desire Wilson and for the reasons mentioned above, as well as Dodge pulling out at the end of 1997, the series did not continue into 1998 and folded.
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Though, given the existence of NASCAR, any attempt at a different kind of tin-top series that wasn't already well and truly established in North America was likely doomed to failure right from the very beginning. At least the NATCC actually took off and lasted two whole seasons whereas the American TCR never got off the ground.