If you're driving in the evening with very little traffic, you might want to risk briefly testing your car's top speed. I haven't done that with my current car yet; it's "only" 225 km/h (140 mph) anyway. The only times I've driven faster were in driving school (about 240 km/h, 150 mph) and later in a friend's Alpina B5S (a little faster than 300 km/h, 190 mph). In the Alpina, high speeds felt completely relaxed, which is, of course, deceptive because physics still applies in an accident.
I worked for a company that sold traffic safety products for several years. Warning trailers with LED spotlights and reflective film were regularly destroyed by inattentive drivers. Once, I was on my way on the autobahn to a customer who needed such a "replacement" when a safety trailer was parked in the right lane to secure a road construction zone. Here in Germany, in such a situation, two VMS trailers are always parked on the hard shoulder at some distance from the actual construction site. I briefly flashed my headlights to the truck driver in front of me to signal him to get in line, but crashed into the stationary warning trailer at full speed (80 km/h, 50 mph) - probably asleep at the wheel. The cab was reduced to a height of about 1m high after the accident... Since then, I always drive on the left lane in traffic jams and leave some space in front of my car.
My last total loss was a head-on collision with someone who was trying to turn through oncoming traffic (my car).

Although both cars were traveling at a maximum of 25 mph, my car was deformed up to the A-pillar and a front wheel was off.