"Think X" with Eugene Mirman
Jim Belushi waves goodbye to his mansion, his children and his city, and sets out on a wild road trip through the desert. He crashes into small pile of leaves 15 minutes later and is trapped under the moped where he stays for 4 days, before cutting off his own jeans to free himself.
Pretty sure this is a movie that is currently being made.
"Belushi Goes Bananas"