system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why are cars made to go so much faster than speed limits allow? What is the point of a car that can go 120+ mph?
gpt
Engine Efficiency . If the top speed matched the speed limit, you would constantly be redlining the engine, until it explodes. by placing the max speed in the hundreds , your optimum most fuel efficient cruising speed falls into the speed limit range. plus speed limits are arbitrary and subject to change, how would you like to be on a newly 75mph freeway stuck going 55mph?