Because it's not a tC, xB, or xA.
I kid!
My brother bought an RS1 tC and got involved with ScinergyIA. Then, he went to Scikotics Asylum one year and eventually started the Des Moines chapter. I was a groupie and was thoroughly impressed by how accepting (and cool) Scinergy and Scikotics were (Tony would let me tag along to events and they'd ALWAYS talk to me and give me free tickets since I was a guest). I wanted something that was a little 'bulkier' and more 'suv-ish' than the xB or xA, so I knew I was going to get an xD even before they were released.
I signed the papers the day before my 21st birthday and waited just shy of a month for it to come in, then drove it to the meet right after I picked it up. Only 3 people knew about it, so my brother and the rest of the chapter were speechless when I drove up!
All about the 'wow' factor baby!