> My car started fine at home this morning, I drove about 60 miles today,
> stopped by a Starbucks got out and when i came back, the car will not
> shift into Drive. That Car starts fine, only when i depress the thumb
> thing to move it into drive, nothing happens. Its hard and will not
> depress.Its stuck in park. What do i do!!!!!!!!!!!!
>
> I have about 120k. It worked fine till today.

I assume you have a Honda, by your screen name.

The brake switch underneath the brake pedal is probably disconnected or
broken. Your foot may have kicked the switch behind the brake pedal by
accident, and over time, the switch becomes loose and eventually
becomes disconnected.

The shifter locks as a precaution, because if the brake switch becomes
disconnected, NONE of your brake lights will work when you step on the
brake pedal. You need to get down with your head near the driver's
side floor and look up and behind the brake pedal to see if you can
reattach the switch.

The same thing happened to me in my Mercury when the odo was close to
100k miles.