Here’s a guy who put together a cheap cellphone and GSM-enabled relay to make a GSM car starter, meaning he can start his car by calling a number. The creater used GSM relay unit which says it cost him $199 but I think if you buy the GSM unit and relay separately, he could have saved even more money. (I’ve done a similar project here, all you would have to do is add a relay to that and it would be a GSM relay unit btw. That one you can use SMS texting to start your car if you wanted to.)
I hate the cold and for years I’ve dealt with walking out to a cold car and waiting for it to warm up and the windows to defrost just like everybody else. Eventually I came to the conclusion that there has to be a better way! Why can’t I start my car from my desk and let it get warmed up without me sitting in it cursing old man winter?
Of course, if you can make your car start by “twittering”, that would be awesome. It’s definitely do-able.