Elon never said that. The only thing he said was that sometime in 2018 they would be at 10k per week. Sometime in 2018 could be all the way in December of next year.
So you think that even though he just said customers won't see AWD until next year that they'll somehow start delivering them this year? Most of the time, things come LATER than he says. I definitely wouldn't bet money that AWD will be available this year. I wish it would, but I'm not holding my breath!
There is absolutely no way that we will see AWD this year and his twitter comment confirms that. I'm a Tesla fan like everyone else here but anyone who believes that they will be far enough ahead that they will start AWD this year is delusional. You just can't ignore the track record Tesla has for timeliness, I think they will start production in July but I think the goals they have set (1,000 in July, 2,000 in August, etc) are aggressive and unlikely. I mean 1,000 a week in July!?
That being said I'd love for Elon to prove me wrong.