What you have pictured is an Easy Racers Tour Easy clone. It looks to be fairly well done except for the choice of fork, way too light duty. I rode a Tour Easy for 11 years, just recently sold it and went to a Sun EZ3 AX delta trike with a WE 400w (BL36) pedal-first hub and solar panels to boost range and recharge batts. My other ride is a HPVelotechnik Scorpion Trike, pedaled over 4000 miles/year. I am a FROG - a fat retired old guy, and wouldn't jam a df seat up my clacker even if paid. We trike riders have an answer to those that say we are too low, it being, "Do you have trouble seeing the lines on the pavement? They are even lower than I am!" That usually shuts the dumbwadds up fast. I went to an electrified trike because of stability problems caused by heavy solar panels on a single wheel trailer behind the TE, plus, it was a long cable run from the trailer to the hub - over 8 feet! Having sla 36v 12ah batts atop a 700c rear wheel made for a shorter cable run but worse stability problems than an overloaded trailer.
The best thing about a TE made in cromo is the compliance built into the frame, which is taken away when running a aluminum frame, and regained when the frame is in Ti alloys but still as light as the aluminum. LWB (long wheel based) recumbents are treasured for stablilty at speed (as long as not overloaded with solar and batts), and they can be much faster than diamond frame bikes due to aerodynamic advantages, which is why recumbents are banned from most races - you'll never see one in the TdF or similar race. The pedaling position is remarkably efficient. Most people do not realize that you are limited in the amount of power you can produce when standing. Using myself as an example, I weigh 240#, which means the most weight I can apply to a pedal while standing on it is 240#. On a leg press I have done over 3 sets of 10 reps with 700# ( yeah, it was a few years ago, I was 55 then, 60 now). Divide 700/2 - way more than 240! Most pro riders you see stay seated on df bikes because you can produce more power over a longer time seated using cleats or toe straps to attach your feet to the pedals. They stand for a burst, but sit down asap. Of course, on a 'bent, standing on the pedals is impossible.
Just a few current records held by pedal powered recumbents. 1 hr. unfaired - 29 miles. 1 hr. faired - 53 + miles (on a 70# faired Varna, at the Nissan test track in Az, warm!!), top speed - 83 mph, again a 70# Varna using a 5 mile run in to a 200 yd. speed trap, done twice into wind, with wind. These records are held by cream of the crop recumbent riders, the 1 hr. faired record was set by the owner of Easy Racers, "Fast" Freddy Markham, a former US Olympic Team rider - at over 50 years of age!
It shouldn't be difficult to pick up a lovingly used steel TE for not much more than you would pay for all the parts you would need to buy. Sure, build your own if you want an adventure, or buy a used one - check out BROL, BentRiderOnline for classifieds. Motorize it and have a ball!