It makes a legal difference if the names appear on the title joined by “and,” “or,” or sometimes “and/or.” If the names are joined by “and,” then both named individuals will have to sign the title as “seller” make the transfer to the one person who is going to remain. If the two names are joined by “or” or by “and/or,” then either person alone can legally complete the transfer.
Suppose, for example, that two friends want to start a band and travel the country together in a van. They buy the van together, and the title lists the owners as “John Smith or David Roberts.” If the band breaks up someday, either John or David could change the title into his own name without requiring a signature of the other one. (This example is just given to show the technical importance of the names. If this actually happened, however, the band member who got left out might have a law suit against the other one for half the value of the van.) Be careful. At least one state, Arizona, treats the “and/or” differently. In Arizona, for example, if the names on the title are listed as A “and/or” B, then it is treated the same as “and,” and both people must sign the transfer.