It also features Marjorie Main, Keenan Wynn, Bert Freed, Moroni Olsen, Gladys Hurlbut, Madge Blake, Howard McNear, and Walter Baldwin.

His fiancée Tacy comes up with the idea of buying a trailer so that they can travel together around the USA to his various work projects, as well as to save money that would otherwise be spent on a house.

They intend to haul the trailer themselves to Nicky's first job site in Colorado, as part of their honeymoon trip through the Sierra Nevada mountains.

Upon arriving at her aunt and uncle's house, a large crowd gathers to greet them, and they watch as the hapless Nicky, guided by Tacy, backs the trailer into their hosts' carport, effectively destroying it as well as a prized rose bush.

As it swerves and wobbles, possessions fly, dinner is ruined, and Tacy, who had been cooking in an elegant dress, ends up in a big mess.

That evening, Nicky orders Tacy to get rid of all the large rocks and jars she has collected before they make a cliffhanging drive on a narrow road through mountains that will rise to 8,000'.

But Tacy, reluctant to throw away what she considers precious memories of their honeymoon, decides to hide the items so that Nicky won't find them.

As they undertake the harrowing mountain drive, everything Tacy has hidden rolls around inside the trailer, making a big mess.

The more powerful Lincoln (which is equipped with a 205 HP OHV Y-block V8 engine) was needed to pull the heavy New Moon trailer up and over the steep grades of the Sierra Nevada where the scenes were filmed.

The house where the trailer was parked and being chaotically packed with housewares by Tacy's friends appears to be Lucy and Desi's actual home on Roxbury Drive in Beverly Hills.

There is one memorable scene where the car and trailer emerge from a tunnel to a view of Yosemite Valley, complete with a panorama of El Capitan, Half Dome, and Bridalveil Fall as the stars sing a duet.

Arnaz made a $25,000 bet with the studio that the movie would make more money than the current highest-grossing comedy at that time (Father of the Bride, starring Spencer Tracy and Elizabeth Taylor and also directed by Vincente Minnelli).

[1] It was a triumphant return to MGM by Lucille Ball, who had felt underused by the studio when she was under contract in the 1940s, according to Michael Feinstein, who hosted a TCM showing of the film.