It's amazing how refined, shock-absorbed, and quiet modern cars are, compared to the '70s and '80s zoom-zooms. You take a 4 year old BMW up to, say, 120-140 miles per hour, and yea you're going fast, but it's a very muted fast. You can't really even tell unless you're looking at the speedometer.

When I took my old '86 944 Turbo up to that speed, the visceral vibration and sound feedback, barebones interior, and visible lack of airbags, made it impossible to forget the reality that you were taking your life into your own hands. Not something to do on public roads.