I've seen cars on bridges and even a helicopter on marine radar
. The problem is the rotation rate is too slow for objects moving as fast as cars. However, there will be information on the screen
, but it will not be obvious what you are looking at without training. It will NOT look like thermal imaging or night vision scopes
Do your homework on aperture, tuning and such. A compass
input is necessary if you want to describe or plot what will otherwise be dependant on the vehicle heading.