Yes, WR has been integrated into opensea.io since the pre-sale began.  This is a good thing for pre-sale investors for several reasons: 1) If you find yourself in a financial jam, you have an easy way to liquidate assets   2) Bargain hunters can pick up vehicles at less than "sticker price"  and 3) Earlier investors have an opportunity to take some profits, due to the ascending price mechanic of the pre-sale.


Exact dates have not been put out yet but I can give you a general timeline.  Vehicle customization is coming at the end of the premium pre-sale, which is about 5 weeks out.  Beta-testing before the end of the year, 2-3 months out.