What car should I buy?

[glatt]

40 in a 55 is completely unreasonable. Unless there's ice on the road or something. Even then, you should pull over and let cars pass.

I can only think of a couple times in my life where I really wished I had that extra power. And one time was in a rental car. I had pulled over at some roadside vendor north of Toronto on Canadian thanksgiving weekend. Traffic was extremely heavy with absolutely no breaks and the ramp to get up to speed was relatively short with no merge lane. After waiting several minutes for any break, I just pulled an asshole move where I got up to speed and barged my way in. Somebody let me in. Come to think of it, accelerating wasn't the problem, it was simply finding a gap to coincide with the end of the ramp. I didn't like that.