Call me a traitor, but after driven a Tesla X, S, and the current gen Acura NSX. I'm a firm believer in EV... not necessary Tesla, but EV in general.
Yes, the NSX isn't exactly an EV, but it showed me what's needed to push ICE cars beyond the limit. And that's a fucking electric powertrain.
Tesla Roaster is going to do 0-100 in under 2sec even with all the battery weight and stuff. A feat that no current production ICE is capable of. (fastest came at around 2.3, which Model S P100D already beat) Furthermore, any hypercar manufacturer worth their salt are all going electric in at least some form of hybrid. Because if you can't beat them, join them.