The gameplay is def there, but the replay value is lacking. There isnt much else in Excite Truck other then just the regular Race. I'd suggest renting it before buying.
I've got it, just finished playing about half an hour of it actually. It's a great game, pretty good replay value... like most arcade style games. It doesn't have any sort of story to it, so this makes for a great pick up anytime and play sort of title.