I may get 104,000 miles this month via AmEx Skymiles Platinum Card Double Miles offer.

After not finding any other better FF miles deals for new cars, I ended up with the original dealer.

My dealer agreed to let me charge the entire car on the card, so $42000 became 84000 miles. Yes, they made sure the transaction date was on 8/14.(the day he got approval from AmEx)

another 20,000 miles should from other purchases and the "upgrade to Platinum Card" bonums miles.(10000 + 5000 base miles)'

Unfortunately, a terrible thought just came into my mind... is there a month/year limit on the number of miles that can come from using the Skymiles AmEx card? I spoke to someone at AmEx and she said there is NO limit for Platinum cards... I tried to find something on DL's website, in writing, so I won't be so worried.... but I came up with nothing... Can someone show me where it says "no limit" on bonus miles?

Thanks!