buying used car

[Kozikman]

so when buying a used car do both parties need to have a copy of the bill of sale? Isn't the pink slip enough?

[2EFNFAST]

Buyer will need the bill of sale for insurance (and registration I believe?); seller would be pretty silly not to have a copy as well.

[Bumjubeo]

The pink slip is enough, but it is in your best interest to have a proper bill of sale.