Hey BigAl and the Autopia community,
CarMD works as an easy to use handheld tester, made for the everyday driver.
Check to see if you will pass the smog emission test, catch a hidden engine problem, peace of mind before a long road trip, peace of mind when buying a used car and of course reading the "Check Engine" light.
If there are any other questions or concerns about the product I'd be happy to answer them. You can PM me or leave a comment here.
Regards
CarMD