It's even more noticeable cycling. An adult on a bicycle has their head just above roof level of an ordinary car, which is excellent as it gives a view of cars coming the other way.

I go through the area where all the really rich people live, and it's easy to see over their sports cars, luxury sedans etc.

Continuing through the wannabe-rich area, my view is then blocked by SUVs and similar.

(Whether this is important depends mostly on how well separated car and bicycle traffic is.)