If driving on the left is good enough for Ireland, England, Australia, New Zealand and Japan, that's enough to be going on with.

I like seeing signs saying KEEP LEFT anyway. The shame is we don't stick to the principle.

I suppose there are jobs in which it is necessary to carry a couple of PCs and lots of software around, rather than carry a single disc, with a PC at both ends of the journey. Generally speaking I'd sooner be stuck in a held-up train than in a car in a gridlock. Though it was a lot better before they introduced these modern type carriages without compartments and corridors.