Today my 2013 Model S decided to let me know that the Powertrain is in need of service. The message on screen is "tesla powertrain requires service - ok to drive". I live a few hours from a service center and I'm sure it will be a few weeks before I am able to get it in. I still need to use this car in the mean time. So when it says "ok to drive", is that meaning its ok to drive it until I am able to get it serviced or....is this more like "only drive this thing to the service station and no where else?" I guess I'm asking anyone that has had this warning if they drove for a little bit before taking it in for service?