Howdy
I worked for Motorola about 10 years ago and we used to install these on transport vans for the railroad. These guys could be sitting in the middle of nowhere waiting for a train and these were the ticket. no plug in and always a warm truck. The only problem that we ever had was a truck ran out of gas in the parking lot after being left for a week. Hopefully they have corrected that!

Ready Start can be programmed to automatically start your vehicle at the same time the next day, at low temperature, or at low battery voltage. Never come back to a dead battery again!

http://www.designtech-intl.com:8080/...atid=18&step=4