and as to technology, safety is fine, the only reason i care about fuel consumption is in regard to whether the rules say you can refuel or not for pit crew safety, racing is racing and at the pinnacle of racing, fuel consumption should NOT be a factor... leave that to the other formulas
but then again, that's just me... i never heard of NHRA or NASA worrying about fuel consumption
“...nobody sells street cars based on how bad their four cylinder is...”
Well Suraru has been, and now with everybody going turbo four, they will too.
BMW, AUDI and Mercedes now use turbo four on their entry gas engines here in the USA.
And since turbo makes it easy for huge increase in street car power, the race cars become more relavent to street cars.
The courses can only handle so much top end speed. What does it matter how the power is made, to reach 200+ MPH?