Dilwale Dulhaniya Le Jaayenge
Alright, so DDLJ isn't a conventionally 'road' film, but the entire first half revolves around a Euro-trip gone romantic, while the second half features an NRI boy tripping through a very Punjabi wedding to whisk away the bride.
But it's DDLJ, and we never really need an excuse to celebrate a movie that's fun.
Also See: Girl power, desi-style!