Comment by rtpg
I think if you want to make this argument you can go look at the stats. Look at the relative cost of vehicles in the EU over the past 25 years, compare to the cost of vehicles in the US over the past 25 years.
Obviously the lack of difference there wouldn't prove much (if I had to bet I'd bet cars in the US have gotten way more expensive faster than in the EU, just from labor costs), but the lack of a major difference would complicate the theory that new regulations in the past 15 years have massively improved costs, absent a theory that some other thing the EU is doing but the US is not doing is also kicking in to similarly counteract that.
The numbers exist, this isn't in the abstract. Just a question of doing the legwork
I think we should not compare EU vs US costs but rather predict what would be the decrease in costs (relative to EU itself) due to reduced regulations in EU.