My car just turned 30,000 miles last week without a hitch. First problem my speedo no longer returns to 0 MPH when I turn off the car it stops at an indicated 11 MPH. Now it's as if 11 is 0 and it reads that much higher driving and sometimes it doesn't move at all and just reads 11 no matter the speed. I plan to take it to the dealer, just wondering if anyone had any ideas. I didn't find anything via Search.