Automatic Beer!

This has gotta be the greatest invention in the history of the universe. Well except for those break-dancing robots that accidently killed millions of people. Is the Smart Beer Coaster and as you gradually empty your giant beer it senses when you are coming to the end and automatically wakes up your monkey butler or robot honcho to come and refill your glass. No more waiting in line at the pub you just drain your beer and another one magically appears. Hang on, this idea is actually damned stupid, the cost of the coasters would surely raise the price of beer and that just couldn't be allowed as it would make me drink less beer.