Found this in a rate listing on Travelocity, thought it might be handy.

Makes

*** ALL MODELS SHOWN ARE REPRESENTATIVE ONLY ***
*** MAKE/MODEL CANNOT BE GUARANTEED ***

TYPE CLASS EXAMPLE OF MAKE/MODEL PSGRS DOORS NO. OF BAGS
ECAR A HYUNDAI ACCENT 4 2-4
CCAR B FORD FOCUS 4 4-5
CDAR B FORD FOCUS 4 4-5
ICAR C MAZDA 626 4-5 2-4
IDAR C MAZDA 626 4-5 2-4
SCAR D FORD MUSTANG V6 4-5 2
FCAR F FORD TAURUS ABS 5 4
FDAR F FORD TAURUS ABS 5 4
PCAR G MERCURY GRAND MARQUIS ABS 5-6 4
PXAR H VOLVO S60 5 4
LWAR H4 VOLVO V70 XC WAGON 5 4
PSAR H6 VOLVO S80 5 4
LCAR I LINCOLN TOWNCAR 6 4
LXAR I6 LINCOLN LS 5 4
XSAR J JAGUAR S TYPE 5 4
XXAR J4 JAGUAR XJ8 5 4
XCAR J6 JAGUAR X400 4 4
SFAR L FORD EXPLORER 5 4
FVAR M4 FORD SUPER CLUBWAGON 12 4
IJAR P LAND ROVER DISCOVERY 5 4
CFAR Q SUBARU LEGACY 4-5 4
IFAR Q4 FORD ESCAPE 4-5 4
MVAR R FORD WINDSTAR GL 7 3
IPAR S FORD F150 3-5 2-4
FFAR T FORD EXPEDITION 8 4
LFAR T4 LINCOLN NAVIGATOR 7 4
PFAR T6 FORD EXCURSION LTD 8 5
STAR U FORD MUSTANG CONVERTIBLE 4 2
LCAR, FAR, MVAR REQUIRE AT LEAST 2 HOURS ADVANCED
BOOKING.
.
STAR, FFAR, PFAR REQUIRE AT LEAST 24 HOURS ADVANCED
BOOKING.
.
XCAR REQUIRES AT LEAST 4 HOURS ADVANCED BOOKING.
** ABOVE MODELS ARE REPRESENTATIVE ONLY **
MAKE/MODEL CANNOT BE GUARANTEED