Well I'm worried the bad weather has set in and I have to switch from hitchhiking to public transport. I know there are buses from Istanbul to Tbilisi but I wonder if there might even be a direct bus connection from somewhere in Greece to Tbilisi since it seems to have a Georgian expat community.
So far I can't find anything with my Internet searches but maybe there are some secrets to be discovered by searching in Greek or Russian?
I've found mention on Lonely Planet's website that there are indeed buses from Thessaloniki to Tbilisi - but no details.
For the truly hardy, several companies run buses to Thessaloniki and Athens (€100) from Ortachala.
Elsewhere on the Lonely Planet Thorn Tree there are some comments with more tidbits but no details:
djpeanut: A friend of mine took it at the end of last year. Not that amazing really.
fluffy_bunny: I had thought there were buses from Didube (Neo-turs). But the price of $100 0r so is about right. The trip takes about 2 days.
Can anybody find times, prices, companies, departure points, any juicy details I might need?