NSS: 3% back on Gas Purchases

[mcs328]

Didn't know if this should go under Auto, Finance or S/NSS.

My Costco AMEX card now gives me 3% back on all my gas purchases. Yay. That saves me about 10 cents a gallon. So now I have that in addition to 3% off restaurants, 2% for travel and 1% for everything else.

[guiseppewv]

Maybe I should switch to this card. I think my Amex gives me 5% off gas and groceries. I would like the 3% off restaurants. What does the "travel" category include? I am sure hotels, airfare, and rental cars but what else?