Thank you for providing that additional context and your continued patience. That clause addresses their right to cancel the lease -- not your right to cancel the lease.
So, from the facts you've described, the lease does not give you a right to cancel.
You may also be surprised to learn that there is no state or federal law which gives you the right to cancel the lease. You may be thinking of a three-day right to cancel, however, that only pertains to door-to-door sales. You can learn more about that cooling off rule here: http://www.consumer.ftc.gov/articles/0176-protections-home-purchases-cooling-rule
It does not apply to car sales/leases.
Thus, to answer your question, you are stuck with the lease. There is no independent law which gives you the right to return the car.
I know that this is not what you wanted to hear but you deserve a candid answer. I wish very much that I could offer you an answer that was more favorable to your circumstances, but the law seems to be pretty clear. Had I been able to provide an Answer which might have given you a successful outcome, it would have been my pleasure to do so.
I hope you understand.
My goal is to provide you with excellent service – if you feel you have gotten anything less, please reply back. I am happy to address follow-up questions. Thank you for your business!