Wedding Party Transportation

What is considered the norm as far as providing transportation for the wedding party? This is my situation: The reception hall may be providing us with a limo for transportation. At first, I wanted the time from the church to the reception for just my FH and me. These will be the first moments of our marriage, and I know that once we arrive to the reception, we will be quite busy greeting guests. But, if I decide to have the limo for the bride and groom only, am I responsible for providing another limo for the wedding party? Would it be horribly rude to ask if the wedding party (14) would like to all chip in for their own limo? I am open to suggestions and realize that if necessary, I will start saving now for their transportation.