I was once enjoying travel as I used to travel and roam often by bike, bus, car, train and flight etc. and later stopped to travel often due to a different job assignment and commitment. I had traveled in various transport mode as stated above for a short and long distance viz. Bike, Car, Bus, Train and even Flights etc. that some of them written on my blog posts.
If you are looking for information on how to travel, or travel tips, or the best way to travel, or tips for sleeping while travel etc. then read this post. I am just writing it as knowledge sharing. I had traveled in a Flight's first class seat couple of times where it has enough comfort to sleep like a bed-button type but it didn't worked well for me even sleeping for just one hour as well, while the journey was for more than four hours despite of tired of luggage and local travels to reach Airport etc.
I tried in a luxurious and comfort AC buses for a long travel with semi-sleeper or seat with comfort like semi-bed type but it also doesn't worked well. The next one is the car, yes, the SUV also didn't worked it for me to get sound sleeping, so, no comment about a bike and sleeping upon travelling for either personal or holidays or vacation etc.