I found this really interesting - might try it out:
http://www.blipbillboards.com/
Essentially, you can bid on ads on digital billboards, similar to the way you'd bid on Google ads, so you can control the amount of time down to the second, the time of day, the price you pay, etc.
Right now the billboards are just in the Western US, but I imagine if successful, they will spread.
http://www.blipbillboards.com/
Essentially, you can bid on ads on digital billboards, similar to the way you'd bid on Google ads, so you can control the amount of time down to the second, the time of day, the price you pay, etc.
Right now the billboards are just in the Western US, but I imagine if successful, they will spread.