....... I'd make a custom track. They can be big [like my "Bit City" under construction], or as a track that could fit in a suitcase. They require: you to be patient

, glue, tape, foam-board, bristol-board, a budget

, maybe some 1:64th scale cars as decoration, paper,and a printer. [Sorry for such a long sentince.]
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My Garage: One Lamborghini Jota, Murceilago, Diablo, and a Countach.
One Ferrari Enzo.
One Porsche 911 GT2s, and 1 911 Turbo.
One Mercedes SL600.

1 Mitsubishi Eclipse.
Two 95' Mazda RX7s.
And 4 dozen Toyota Supras, 6 Skylines, and a Hino Blue Ribbon Bus from the Keisei Line.