On Demand Car Service Uber has many different transportation options, but the cheapest is UberX which is a car-sharing service that can be cheaper than a taxi.
New users can receive $20 credit at sign up (with my referral link) and the credit does not expire.
After you sign up, head here to enter promo code C2E2 for another $40 credit, which expires 5/31/14. New users can combine the two credits for $60 in free credits! Nice! Only working for Chicago Thanks, Catherine!
It looks like Uber specified it is only valid for Chicago. If you are looking to sign up for Uber, you can still combine promo code HIPMUNK for a free $25 credit (expires 5/2/14) OR promo code KALEB for a free $20 credit (expires 8/8/14) that can be entered after the $20 referral credit.
*Please note that my referral link is included in the post for the $20 free credit. Also, I couldn’t try the $40 promo code to make sure it worked because I am not a new user. If you have any problems or if it is no longer working, please let me know in the comments below. Thanks!