My boyfriend just received his this morning, and he ordered his nearly 2 weeks after I ordered mine (I still have yet to receive mine). We didn't get the shipping email either. I wouldn't worry too much though, the same thing happened to us last year.
Thanks for your input! Maybe I'll try it again this year. I guess I'll just keep checking WSDOT to make sure they're not doing any of that single lane bullshit. So much anxiety associated with the alternative route. Someone drive my car please.