I just posted info on using a cheap OVMS-compatible cell service reseller, H20 Wireless, on TMC. http://www.teslamotorsclub.com/showthread.php/7716-OVMS-Installation?p=6668 97&viewfull=1#post666897 Hat tip to Cathy for doing the research to find a cheaper provider for us. It looks promising, but the jury is still out. Tom