I'm getting about 11 mpg on my VX (mostly local driving). Any ideas on how I can improve it? I'm putting a fortune in the tank due to these high gas prices!

Also, when you leave the VX and you don't remote lock it, after about 15 seconds I hear a long beep and then the VX disengages the starter (so you can't start it without remotely locking then unlocking it. Anyone experience this?