they are a scam is far as i can tell, they offer a warinty for an insane price that covers almost nothing, have many lawsuits for fair reporting and misleading.... they have over 400 complaints in the bbb in mo....
here is there contact details...
NATIONAL AUTO WARRANTY SERVICES INC.
100 MALL PARKWAY, WENTZVILLE, MO 63385
WENTZVILLE, Missouri, 63385