We usually walk in. However, when we sit certain food plots, we'll have someone drive the truck to the food plot to spook the deer off, and to allow the person to get down out of the stand. Trail cam pics shows they come back to the food plot very soon after we leave. It's almost like they sit and watch until you drive away and they're good to go again.
I know a local farmer that will have his wife drive the tractor to a few of his spots while he stands on the hitch. She slows down, he jumps off, and they both go on their way.