On: Amazon Is Now Worth More Than Wal-Mart

[kalleboo]

To power drones, presumably. You have the example of Tata's compressed-air car prototype http://www.business-standard.com/article/companies/cars-runn...

Although I suspect a compressed air tank with enough capacity would be way too heavy for a drone to carry.

[andyidsinga → kalleboo]

yes - that's the type of thing I'm talking about. I've heard of taxi's running on compressed air motors in dense urban environments ..maybe NYC?.

The power to weight ratio is the key issue. Also -- noise could be an issue too -- want to have quiet deliveries.