A bike holiday with a guitar sounds great. I don't have any personal advice but would like to +1 the Xtracycle idea.
Ben Sollee and his band managed to cart a fair bit of kit around as part of their Ditch The Van tour so it's definitely feasible. They used a Surly Big Dummy to transport a cello, worked for them.
Ben Sollee and his band managed to cart a fair bit of kit around as part of their Ditch The Van tour so it's definitely feasible. They used a Surly Big Dummy to transport a cello, worked for them.