The Barefoot Executive
Doesn't look very big 175/250? 1971 Honda CB175K5 http://www.cyclechaos.com/wiki/Honda_CB175 Not sure if it's the same bike with the sidecar? ** I'd guess the 175 a little under-powered for sidecar work?
Looks to be the same bike. The paintjob on the side car is a match and it is a very small sidecar.
Not a moped but one of the many variations of the Honda CT50 - probably near new in 1971. http://www.cyclechaos.com/wiki/Honda_CT50
I thought there was a possibility it might have been a CT90 but this page has some good info http://www.hondatrail90.hondagl.com/category/ct90_yearbook/ . Yellow was an optional colour for the 90 so it could be either.