I only can support the warning for CarTrawler. We just made a short break in Dartmoor, UK, with a CT manged car from local rental. We felt sure to be insured because a collision damage waiver was made by CT. Unfortunately we had a minor scratch on a back road, worth ~700 BP (~1000 €) . Claiming the costs we were surprised to find a small article on page 3 of (in 2 points script) that the waiver covers only UK residents. So a thirty pounds were wasted on top of the damage cost. Nice suprise - or jut dirty tricks ? read full review »