This 1966 Wagoneer commercial from Kaiser-Jeep. According to the commercial’s poster:

“1966 Kaiser Jeep Wagoneer Commercial. The young boy in the commercial is Radio Personality from New Jersey, Dan Klein as a child. He recalls the woman playing the part of the Mother as a Mrs. Emily Mooney. The Husband is Thom Whims and the little girl is Tricia Murphy Duffy. I don’t really understand the commercial, a driver-less jeep wandering on the beach??? … And I LOVE the kid dressed up like a camouflage solider, this was when it was not politically incorrect to dress that way! I don’t think any car company would show that in a commercial now a days. The famous Industrial designer, Brooks Stevens is credited with it’s design. He did much work for Kaiser Industries and also Studebaker. This was one of his timeless designs that still looks good today. The commercial itself was filmed in 1965. The location is the shores of Avalon New Jersey, USA. Apparently according to the young girl in the film, the shots took hours and it was an extremely hot day.”