I think Beth wanted to start being her own person before planning the murder; she bought a car, made known her boyfriend to her family, and they (her mom and brother) told her she could not!!
I think the car was something she did before she planned the murder. Just a possibility.
I agree that purchasing the car was not all that dumb. Remember, this was a family who could afford to purchase cars like you and I can afford to purchase bubble gum.
Re: Re: Re: Re: Re: Re: Re: Columbo: Lady In Waiting
This episode is one of my favourites. I really enjoy the interplay between Beth and Columbo - as someone has noted she does have a very sharp tongue.
I also like the fact that Columbo really does appear to be stumped at how to prove that Beth committed the murder. The inquest clears her and she explains away two of the further clues that Columbo finds.
I love the scene with the lightbulb in the boardroom and the final scene - a great line from Columbo to defuse the situation.