. . . Exhibit 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (IN THOUSANDS EXCEPT RATIO OF EARNINGS TO FIXED CHARGES) THREE MONTHS THREE MONTHS YEAR ENDED SEPTEMBER 30, ENDED DECEMBER ENDED DECEMBER Fixed Charge Ratio 1999 2000 2001 2002 2003 31, 2002 31, 2003 - --------------------------------------------- -------------------------------------------------------------------------------- COMPUTATION OF EARNINGS Pretax income before Minority interest (12,815) 27,683 (71,596) (16,405) 41,020 (1,553) 7,033 Plus Fixed charges 34,714 37,514 44,410 44,102 55,990 12,624 19,814 Plus Amortization of capitalized interest 153 221 265 66 68 Less capitalized interest (900) (1,100) (1,208) (836) (171) (278) ------- ------- ------- ------- ------- ------- ------- TOTAL 21,899 64,297 (28,133) 26,710 96,439 10,966 26,637 COMPUTATION OF FIXED CHARGES Interest Expense 19,096 15,721 14,419 6,941 11,541 2,228 5,762 Capitalized interest -- 900 1,100 1,208 836 171 278 Amortization of fleet origination fees -- -- 103 123 123 21 -- Amortization of debt issuance costs -- -- -- -- 47 -- 41 Estimate of interest on rent expense 15,618 20,893 28,788 35,830 43,443 10,204 13,733 ------- ------- ------- ------- ------- ------- ------- Total fixed charges 34,714 37,514 44,410 44,102 55,990 12,624 19,814 Ratio (fixed charges/earnings an fixed charges) / Deficiency (12,815) 1.71 (72,543) (17,392) 1.72 (1,658) 1.34