From April 24th to May 8th, people in their new cities could sign up for Lyft and get two weeks free. Since the promotion runs for two weeks, I assumed those two weeks were the free two weeks the promotion referred to.
Not exactly! Reader Mark discovered that when he signed up for this promo, he got two weeks free from the day he signed up.
So while you can sign up through May 8th, you still get a full two-week window–even if you sign up on the last day.