Usually that's caused by out of balance wheels. Take the vehicle to your tire store and have the wheels balanced.
If that's not it, take it to a good suspension shop (not a tire store, I don't care what they say) and have it checked by someone who only does suspension and steering.
It is possible it is one of the speed sensors.
Wheel balance may be off...
Wheels are out of balance
Maybe its your motor mounts.
Yes, either can cause a shake while driving.
On the open road or freeway with mild inclines.
Nope.
Tire out of balance or a bent wheel. Also check the motor mounts; this model had problems with them.
Possibly, you have a broken timing belt.
mobile phones
I don't know you tell me.
It sounds like your car needs a 'front end alignment'.Get to a garage soon. If something breaks in your frond end, you could have an accident. $ 50 may save your or someone else's life.