Brake/Dash Lights/door locks

[KC at the Lake]

So, driving in this morning....ABS light on, then goes off....then I'm on 35, and the car suddenly shifted (like gears) the doors unlocked and the ABS and Parking Brake Lights came on, and it started dinging...Check Brake System...And it stayed on all the way to work...add to that, the speedometer increased to 80mph and stayed there.

Any thoughts??????