I'm not on the hellcat bandwagon, but. I will say, I'd feel A LOT safer in a hell cat at 140mph, than I would in. Road Runner at 140..... With both equipped with just harnesses. I've been in. '68 RR at just over 140 on the highway ( the bike he was racing was at 145 and the RR was even with the back tire...) car has only a bar and harnesses. I'd of felt much safer in something like a hellcat at that speed.