The transportation means of the motorcycle which is indispensable for a circuit run.
The rider having attachment in a motorcycle has attachment to a transporter.
I will treat a transporter of such an attachment in a "Transporter" category.

In Japan where it rains frequently, as for the transporter, VAN is common.
And most of people running for a circuit in an old motorcycle are affected by AMA SUPERBIKE.
From the image, it is the minority, but uses an American car.

Then at first from me.
The full size van is very hard in Japan, but it is reliable that it can be loaded with many loads with a family.

KZ1000Mk2 with Dodge Ram Van