PhillyCarShare imposes monthly fee

A colleague says he got this note from PhillyCarShare (which faces tough competition from investor-owned Zipcar) today.  Looks like they're trying to drive casual users away:
  "Rate Plan Change to Benefit You: Please read on...
  "PhillyCarShare is pleased to announce that we're simplifying car sharing in Philadelphia!
   "Starting May 1st, we will streamline our offerings into one plan, the Philadelphia Plan, which will give every residential member access to the lowest PhillyCarShare hourly rates.  The monthly fee will be $15 and the hourly rates will range from $3.55 to $8.55, with the continued monthly 5 cent reduction in the hourly rate through July 2009.  All current Basic Freedom members will be converted to this new membership plan on April 30th, when the first of your $15 monthly membership fees will be charged to your credit card.
  "With the significantly lower hourly rates available in your new plan, you will have access to the lowest hourly rates on the largest fleet with the most locations in Philadelphia. 
  "If you have any questions, please call our Member Services folks .... If you would prefer to pay all at once, we will provide a 30% discount on the monthly fees; you should mention "Coupon Philadelphia" to the Member Services associate, who will then charge you $125 for a 12 month membership...
  "If this plan is not for you, then please use the link below by April 30th, 2009 to cancel your PhillyCarShare membership and avoid being charged the $15 May membership fee.
  "With rate simplification and the most extensive network of vehicles and neighborhoods, we are solidifying the fact that PhillyCarShare is the most convenient choice for those short trips around the city..."