The sign for limousine is done by signing "CAR"
(to establish what is being discussed) and then doing the sign for
"long-CAR" while using a slightly intense facial expression.
CAR:


Note that I'm establishing context by establishing "CAR" as my topic
by using raised eyebrows.
After it is clear that you are talking about a "car," (either from
context or having used the CAR sign) hold both slightly
flattened "C" hands in front of you, a bit off to
your dominant side, at about shoulder height and pull your dominant
hand back toward your shoulder and your non-dominant hand forward using a relatively quick, firm
stretch movement ending with solid hold. Often you will see quite a
bit of facial intensity as a way of emphasizing that it is a big
fancy car.
long-CAR:



Usage notes: The other day I watched a fellow tell a story about a
limo traveling up a long winding road to get to a ski resort.
The signer used slightly flattened "C" handshapes held about 8
inches apart and moved them in unison forward and side to side
pointed slightly
upward
to depict the limo moving along a mountain road. To get the hand
position right, imagine holding a 2 x 4 piece of lumber on your shoulder.
You can learn
American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars