Not so great when driving. There's not a lot of "give" at the ankles so moving foot from accelerator to brake isn't a "swift uninterrupted movement".

For overall kitschy and comfort when tromping around in wet weather, they rock.
Boots work great for the auto deatiling/washing, my jeans tuck quick & easy.
~!!!!~ DO----HEED:
The suggestion the boots run large.
I wear an 8.5, but when the size offered isn't half size, I go for the nine.
A nine would have been way too big; not even thick socks/slapping on and extra pair of socks would have made them wearable.  The eight is a comfy snug fit with a pair of cotton athletic socks.