Yes I drive, I used to drive a pair, but you have to start them off in singles first.
A second hand exercise vehicle could be about £300 for a show vehicle the sky's the limit but for show about £1500 to £2000+
Again exercise harness in webbing is about £250+ to buy a bit cheaper second hand. Show full collar harness is about £2000 to buy new.
I don't think there is any "best" breed, they can all do it to lesser or greater degrees, but don't expect an Arab to pull a roadcoach!
Spindleback gig yes they look beautiful in harness.
Yes it can be done in hilly areas I used to drive in a very hilly area you just get very fit horses and become really good at hill starts.
If you want to see some of the nags go to
www.geocities.com/tonkii2000/horses
or
www.thordale.co.uk you will see lots of our driving horses there. MOst are Haflingers, some shetlands and a Fjord.
I am hoping to drive my Fjord stallion and mare in pairs this year, we'll see what happens.
Driving is potentially more dangerous than riding as a fall from a horse does not involve the tangle of a vehicle too. There are some basic rules to be observed at all times. If you observe them driving is great fun.
Always carry a whip.
Never canter in harness (unless you and the horses are very good and in a driving trial)
Never allow anyone into the vehicle alone you must be seated and holding the whip and reins.
Always hold the reins in your left hand and the whip in your right, the right hand assists the left. Don't try holding them as if you are riding.
These are just a few.
Why do you need to know?