I know this may seem like a dumb "thought" but, I asked myself today, Why do car manufactures make cars like the mazda 3, that go 140-160 Mph...when the highest speed limit I found has been 75mph. Those speeds of 100+ are known to be hazardous road driving...So why implement it? Is it for street racing purposes? The highest I've hit on a car is 105, on a highway...It felt exciting...Lol. Anyways, Maybe I am dumb, but I am just curious.