Hmm. How can I start this thread without trying to sound like I am starting a fight? Discussion, communication, those are both good things.
*SNIP*
I cycle and drive. Even tho it says Bristol by my location, I live around 3 miles from the outskirts, and 7 miles from the centre. If I have to go to the centre, or anywhere near, the bike is always quicker, unless you like driving at night.

I still use my car when I don't have to venture towards the centre, as doing 20+ miles in one go can take quite a while on a push bike.
I must say tho, I get the impression you have a bit of a chip on your shoulder about motorists, but i understand where you are coming from. I've been hit off before, and had lots of near misses, and it does **** me off at times when people don't see you. I now err on the side of caution when there is lots of traffic around, and you need to be ready for
anything! Peds can often be just as dangerous, in fact I've had a mum push her pushchair with her baby in across the road on front of me without even looking! It was good there was no oncoming traffic as I had to swerve into the other lane.
Not all motorists are out to kill you tho - If you treat other drivers with respect (at least some) will return the favour I've found, both in the car and on the bike. If you do ever end up driving, at least you'll probably be more aware of 2 wheeled road users compared to drivers who don't use a push bike or motorbike.
There are some parts of Bristol where using a car is pointless, but there are other places when I need to use my car - the bus service in my area is beyond a joke.
Basically, I think both drivers and cyclists haves to compromise a little, and learn that they both have a right to use the road.