According to a Reuters report, the rebates, interest-free loans and other incentives that US car makers have used to keep sales robust for much of the past year may be losing their allure, just as the industry braces for a slowdown. Citing analysts' reports on Thursday, Reuters said incentives in February averaged $US2,225 per new vehicle, a 10% increase over January and a 33% increase over the same month a year ago. But the seasonally adjusted rate of sales fell to an annualised rate of 15.4 million, down from 16.2 million a month earlier and 16.6 million in February 2001.