This is my current favorite touring bike--my 11th homebuilt recumbent. It is sort of an Easy Racers Tour Easy clone. It has a 27" rear wheel and a 406 type 20" front and a 2 x 7 derailler transmission. This bike started life as a Centurian road bike my neighbor donated and is very smooth and comfortable. I built a couple of long wheelbase recumbents since this one for other people but I feel like this one represents about the best I can do for now with existing methods and materials I can comfortably work with.
My latest projects have been home built crank forward bikes.
This bike fits into the trunk of my Hyundai Elantra very nicely once I break the frame in two sections and pull the seat and front wheel.
My second effort at home built crank forward involved an old Schwinn LeTour and I laid the seat post farther back and angled the head tube back to about 60 degrees to improve steering response:
Here is a look at the seat pan in construcion and a shot of the finished bike. It is very comfortable but not very fast down hill or into the wind compared to a recumbent but is ideal for short trips to the store etc.