Most of the high end cars will go 225 or 249 (legal limit enforced by the engine firmware, also related to what the tires the car is sold standard with can handle).
You'd be surprised, here in the poorer European countries where high-power engines are taxed, and speed limit enforcement lax, you constantly see 100HP sedans with 4 people and luggage cruising the highways above 150km/h. Engines do not really suffer since you're not going flat-out all the time
I once had my little Honda CRX almost up to 110 mph on an empty highway one late night in Nevada. (I might've made it with a tailwind!) Pretty exciting. Not something I'd want to do for an extended period of time. Car journalist David E. Davis claimed he had fun driving the same car on the Autobahn, however.
An 125HP car of normal weight (on American landbarge or anything) surpasses 180km/h and can easily maintain a cruising speed of 160km/h with tolerable noise, but mediocre fuel consumption.
Going 160km/h is easy with most cars. Problem is that it increases fuel consumption significantly so won't really be an option with an electric car (currently).
