I have not seen this before. And why would they do it at a supermarket parking lot?
I was taught about registering to vote in high school. This usually went hand in hand with the information about registering for selective service. Therefore, who could this be targeting? I have a huge problem with attempting to register ineligible “voters”, yes.
I registered to vote in a supermarket parking lot, in fact. Same place where I have been asked to sign to get measures on the ballot. Not unusual.