You live on a crowded island, you tend to lack a few things. Like a proper perspective on the world, or a diversified gene pool. Or perhaps you begin to do crazy things like drink copious quantities of alcohol, and then design unreliable cars like the British.
Or if you are the Japanese, you do weird stuff like come up with names of cars that you would create if a) were not a native speaker, b) didn't consult one when you came up with these silly names, and c) had a gallon of sake while working in the marketing department.
How about names like the Honda Freed Spike (I think they were drunk at the time of naming), the Mazda Bongo Friendee (I swear that's real), the Toyota Deliboy (a delivery van, so I guess it was inspired by a man who liked nitrates and cured meats), or perhaps my favorite the Nissan Prairie Joy (you can make all the sexual Little House On the Prairie Jokes you want, I am sure those Nissan dudes did).
But if there is one thing Japanese car makers can do, it's make a good ad. Honda is probably the best of the Japanese brands in this respect. They are as creative in this area as their cars are ingenious.
But what about the other manufacturers, like Toyota, Mazda, Subaru, Mitsubishi and Nissan? Well, have a look at these ads and you can see that those interesting car names thankfully have no relations to the quality ads these guys (and of course their agencies) have produced.
Toyota Meet the Parents
Mazda 6 Under the Sea