Such kind of state law does not exist. The Illinois buyers' remorse laws allow citizens to revoke specific consumer transactions within 72 business hours. However the three-day cancellation does not apply to any contract, and certainly not to the auto-contract. The right is only conferred on certain purchases like club memberships, health club memberships, door-to-door sales, hearing aids, home repairs etc.
Under the Illinois Consumer Fraud and Deceptive Business Practices Act, citizens have a 3 day right to rescind door-to-door sales when the total transaction is for $25 or more and the seller sells you a product in your home to purchase, lease or rent merchandise. The seller must inform you verbally and in writing about your right to cancel the contract in the specified period.
Under the Illinois Consumer Fraud and Deceptive Business Practices Act, citizens have a 3 day right to rescind door-to-door sales when the total transaction is for $25 or more and the seller sells you a product in your home to purchase, lease or rent merchandise. The seller must inform you verbally and in writing about your right to cancel the contract in the specified period.