cool I test piloted one of these many time zones ago on planet Zephenon , pretty fast they are . I had to pick up a couple of the boy's after the Roswell crash with one of these although I had to use the four door model . 10 star Comander first class . Mr. Zephyr COOL
It would seem your designs are limited by the domes you can get your hands on, have you ever thought of vacuum forming your own? Ive seen people do it with some home made device using clear plastic, the oven and a standard vaccume to suck the air out.