Jim Harbaugh shot an infomercial for the Dodge Demon (starting price: $84,640) recently, a Comedians in Cars Getting Coffee-style show where Harbaugh takes the host through Ann Arbor. The interview, if you want to call it that, touches on Harbaugh's memories of growing up in the shadow of the school he once quarterbacked and now coaches, including the story of when a 10- or 11-year-old Harbaugh punched an older neighbor kid in the face for stealing his bicycle.
He also took the Demon for a spin on the Big House turf -- which has since been replaced -- and managed not to wreck it.
https://www.youtube.com/watch?time_continue=891&v=PBkMuGaOkTs
Oh, and around the 15-minute mark, Harbaugh signs "Hail to the Victors" in country, polka and hard rock styles.