What did the Rangers discover in the abandoned Datsun?

From the text:

When he looked inside, Walsh found a Gianini guitar, a saucepan containing $4.93 in loose change, a football, a garbage bag full of old clothes, a fishing rod and tackle, a new electric razor, a harmonica, a set of jumper cables, twenty-five pounds of rice, and in the glove compartment, the keys to the vehicle’s ignition.