‘Tis true. AutoSlash just sent me an email that they grabbed a lower price for my rental this week. This brings my total savings to over 91 bucks for a 3-day rental! Check out my video about AutoSlash below. If you found AutoSlash after booking elsewhere, remember to cancel your old reservation. Supply & Demand. The more rental cars that are available – the lower the prices! Check out Autoslash.com