How do I buy Illinois RV and get it to New York?

What are the types and uses of temporary permits, and how can they be obtained?
7/30 DAY INTRASTATE/INTERSTATE TRANSPORT PERMITS - A 7/30 –Day Intrastate/Interstate Transport Permit is a multiple permit for use as a non-resident, drive-away or intrastate permit. The permit allows out-of-state purchasers to operate newly purchased vehicles from the place of sale to a destination outside Illinois for 30 days. An intrastate/Interstate Transport Permit may also be issued for a non-registered first or second division vehicle for the purpose of moving it within the State of Illinois. Any second division vehicles operating on a Intrastate/Interstate Transport Permit may operate only on empty weight. Permits are available at Secretary of State facilities for $10 each. (There is more, but you get the point.)