from my research, I have found that the front door glass on each side is marked with only 'AS2', no DOT markings. As well with the rear hatch glass, it is marked 'AS3', but does not have the DOT marking.
Also, with the headlights, only stamped 'HONDA STANLEY 000 00000' with the zero's being a part number I suppose. Also, the headlight is stamped 'WCR 32' with a little symbol beside the 'W' which I can't make out.. but it doesn't appear to be a 'circled E'. Unfortunate.
Wonderful little vehicles with tonnes of aftermarket support, and all the stuff is so cheap!
Once I can post pics, I will share my findings to help other potential SMX buyers.
Great website!