Reason BMW or MBZ pipes sound is better firewall insulation reducing engine noise, overall refinements to reduce NVH, and the use of turbochargers which reduce noise dramatically. Far be it from me to condone this, but in most cases you can introduce a delete somewhere on certain Mercs and BMWs and no one would be the wiser unless you do an emissions test. The next 3 series will be topping out at nearly 390 HP stock, and that's with BMW fudging the engine output. It's going to be higher. Even the current B58 powerplant in the 340 sounds a hell of a lot better than the M3 and M4's S55. The MPPSK should increase output on the upcoming 3ers engine while letting it be louder.
I hate any artificial sound enhancement, though physical pipes that bring real engine noise into the cabin are less egregious then silly stereo sound effects. Cars can be made to sound good without faking it - the sound enhancements are lazy/cheating. To be fair, the same goes for overly-loud exhausts on street cars. "Loud" engine noises are not necessarily "good" engine noises.
At the end of the day, if you want an electric car that can be repaired easily god forbid you get into an accident or just not have massive flaws, go for the Chevy. I wouldn't recommend a Tesla to anyone. Not now at least. I don't trust Mickey Mouse operations. I'd be willing to bet when and if the Chinese copycat (see: Steal) Tesla's IP, they're going to create a better version all around for less money per unit than Tesla.
I share your concerns about Tesla. I think Musk has a point when he says establishing a new product in the market is hard and requires taking some big risks - but I don't want to purchase/drive an experiment.
As for the Chinese competitors, China's safety record with automobiles is abysmal, there are valid moral arguments for not supporting their auto industry, and the cars are cheaper because the people building them make nothing by our standards. So I wouldn't necessarily feel better buying one of those.[/QUOTE][/QUOTE]