Many rental car companies have been running specials as steep as 50% off regular rates. The bad news is these rate specials end in June and most companies plan to increase rates over the summer.
There are a few exceptions. Hertz has a fleet of gas saving, green vehicles. To promote the new fleet, it will offer $25 off a weekly rental on these eco-cars this summer. If you're calling, use the promo code 113503 for the Green Collection.
And you can save 10% if you reserve with Alamo on its Web site and pre-pay with a credit card.
Click here for ad and guilt free green car rental tips and easygoing green hiking tips.