Check your motor mounts.
engine rubber mounts or timin out
Its either timing or fuel intake problem.
if it shakes while your braking your front roters could be warped or if it shakes while your driving try balancing the tires at a tire shop.
you will need a front wheel alignment
You may have a ball joint going out or your wheels are unbalanced
* While driving, the vehicle pulls heavily to the left or right
Carburator problems -- dirty gas -- water in gas
Usually if your vehicle shakes while driving -- especially if you don't notice the shaking at lower speeds, but see it at speeds of 35-40 MPH or more -- it is caused by a wheel being out of balance. The good news is that balancing a tire is usually very inexpensive.
Yes, you can carry a photocopy of your driving license while driving.
probably a bad camshaft sensor.
No
Yes, the reversing vehicle must always give way.