Jeff visited a car dealership and test-drove a used car.

Jeff visited a car dealership and test-drove a used car. After discussing the price with Jake, a salesman at the dealership, and learning that he could buy the car for $500 less than the sticker price, Jeff asked Jake to hold the car for him until 8:00 PM that evening so he could bring his wife back to the dealership to see the car. Jake agreed, writing out a note promising not to sell the car until 8:00 PM. The note was written on dealership letterhead, but Jake did not sign his name. The dealership broke that promise and sold the car to Bill before 8:00 PM. Was the dealership free to sell the car? Can Jeff sue Bill and recover the car? Does Bill have a claim against the dealership?