What is the title of a movie from the 1960's or early 70's that a boy is pursuing a girl. He paints a nude portrait of her, that she did not pose for, and her father goes after him because her birthmark is in the picture. The mark on the portrait was caused by musturd falling off a hotdog while he was painting. When the girl is driving, an MG midget or similar looking car, the gas pedel gets stuck and she can't control the car.

The Impossible Years (1968)
Starring David Niven, Cristina Ferrare, Lola Albright, Darleen Carr, Chad Everett, Ozzie Nelson
IMDb review:
Okay,so this movie wasn't really that good to some people, but I, for one, liked it. A father who is a doctor(?) has two daughters: Abby, who is the youngest; and Linda, who is the oldest (and has the raging libido). Yes, it's boyfriend after boyfriend for Linda, and her parents watch her wondering why their daughter jumps from one boyfriend to the next. It isn't until later when she moves out of the house and gets married, only to see her father trying to find out who her spouse really is. There is a favorite scene of mine where Linda's parents are having a party and her boyfriend brings in a portrait of her that he painted. And when he shows the family and guests, it's revealed to be a nude portrait, which Linda didn't know about!

http://www.imdb.com/title/tt0063128/?ref_=fn_al_tt_1



I saw this in the theater!