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Car, no. Truck, yes.
Ford did make a car with the XL moniker but not XL 100. There was the XL, Galaxie 500 XL, & XL GT.
The XL stands for 'eXtra Large'.
No, the 3DS XL is slightly smaller than the DSi XL
No, the Nintendo 3DS XL is slightly smaller than the DSi XL
As of July 2014, the market cap for XL Group plc (XL) is $9,114,226,666.92.