Celebrity pairings ride along in a car together as they sing tunes from their personal playlists and surprise fans who don't expect to see big stars belting out tunes one lane over.
1983
1992
2009
1963
1987
1998
2003
1996
1975
1984
1968
1991
2020
2005
2016
2013
2017
2010
2019
