just a small detail... TR-7 (and 8's) were front engine.There have been mid-engine cars that were much more mainstream than this kit car over the past 40 years. 914, TR7, X19, Fiero, MR2, hardly a new concept.
The suspension on the 818 is double a-arm front and multilink rear.
but you are 100% correct, mid engine is mainstream since... like? after the ferrari lambo wars trickled down to the market.
mr2 was really just a copy of the x-1/9, alla = miata/elan.