http://mobile.bloomberg.com/news/2013-08-23/uber-s-google-led-funding-said-to-value-company-at-3-5-billion.html
Check my math, but if the leaked valuation is true, Google only got about 7.5% for their over $1/4B investment!?
Here's Uber:https://www.uber.com/
What is POET worth?