So you want to rent a car for your next trip. Where do you start? Most travel websites will require a payment up front when you book a reservation. The following resources do not. Autoslash is a website which does all the work for you. They will find the best coupon code and look for the best rate for you. They will monitor and rebook the lower rate if it becomes available. They can search multiple vendors. First, you can search directly on Autoslash. Enter your criteria like