After years of CGI effect-laden movies, I've found that I appreciate physical presence on film. CGI may be OK for things you don't see everyday, like dinosaurs or spaceships, so long as people aren't included in the image. CGI people, including aliens with too much acting time, just don't work.
Funky vehicles are a tempting subject for CGI, computer rendering is just a lot cheaper, and looks it. The Batmobile from Batman Begins is not part of that category. Check the article for specs. There probably were effects for the more outlandish stunts, but the straight chase scenes were real cars chasing a working prototype. Thank you, Director Chris Nolan, for keeping it real.