I was hoping to obtain a cell phone almost exlusively for use with roadside emergencies -- thus, I was targeting the 'pay-as-you-use' services versus a regular monthly contract. However, the cards/minutes applicable to the 'pay-as-you-use' services seem to have expiration dates; e.g., 45-days. So, if 45-days passed without the card being used in the case of a roadside emergency, I would be forced to buy another card, right? Also, even if I used the card for one innocuous call during each 45-day period, while I could then presumably roll-over the minutes to a new card,I would still be buying new cards every 45-days, accumulating more minutes than I would ever need for roadside emergencies, right? Any ideas? Tips? Tricks? Thanks.