Our last two weeks we rented a car and drove around the entire country. We lucked out and had sunny weather most always and the scenery was spell-binding. You really don't see much of Iceland without a vehicle to tour in. Public transporation only runs in the summer and even then to limited locales. I've heard of folks touring on bikes, but we didn't see anyone and you'd have to be real strong and quite lucky not to get blown away...the wind rolled moving cars off the road while we were here. Of course, Icelanders traveled by horse for over a thousand years and there are "horse roads" right beside the paved roads most places where people still ride today.