What if a company cancels when you are half way to the signing?
Its very inconsiderate for a company to cancel after you have departed for the signing. Its too late for you to get another job,
and you have already invested time and gas in the job. You can either roll with the punches, or try to bill them half price
for travel time. Most companies will not compensate you for a half travel fee. Signing companies are generally cheap, and try to pay
as little in general, and try to avoid paying for incomplete jobs. Many of them don't even pay for completed jobs!
My advice is - be tolerant, and pleasant so you can keep the client.