I would check to see if the dealer rep actually signed the buy order and the legal language on any document you signed. For example, I left $500.00 refundable deposit with my buy order, but the order wasn't signed by dealer rep and there was nothing in writing stating my deposit was refundable---I wrote that in the memo of check.
My dealer sold me the bike and we also negotiated the original buy order that lowered my overall cost, etc.
Step 1, what signed docs do you have? Then proceed from there. What attorney will take a "potential" breach of contract; was there an Actual offer and acceptance, etc.
What if you were a potential buyer and unable to buy the bike, would the dealer be able to force you to buy, etc? --this is just a different example.
The key is whether you actuly had a contractural agreement, etc--starts with docs, not "verbal"--deposit, signed buyers order w/ dealer rep sig etc.