Add Car Rental Widget from Landing Pages

![1414683210](https://cloud.githubusercontent.com/assets/708296/4846205/2c1b5582-604a-11e4-80ab-fec7b79cb81e.png)

TIL! I think it may be more trouble than it's worth in this case though as there's a data attribute involved. Also: the currencies list is rather large so that would be a bit of a performance hit.