All the SRT-4`s at the meeting belong to US-Guys since the SRT-4 wasn´t offered in Europe. The old-style plates were worn because the had to wait for their regular plates to come. The Aspen ("Yeah, it´s got a HEMI!") is also owned by an US-Guy.
The SRT-4 was the factory tuned version of the Neon with a 2.4 inline 4 and a turbo, delivering 234 hp. It achieves 0 - 60 mph well under 6 seconds, making it one of (or the) quickest front wheel drive car.