A line of Chevrolet autos made by General Motors are seen for sale at a dealer in Wheat RidgeVia Paul Lienert DETROIT (Reuters) – A one-two punch of bad climate and overproduction has ignited a price cutting war among U.S. car sellers and producers. Frigid temperatures and iciness storms in the past six weeks have slowed retail sales and showroom traffic, inflating inventories of unsold automobiles and triggering a brand new round of steep reductions through carmakers and their dealers. Some of the heftiest reductions are being provided with the aid of Ford Motor Co and General Motors Co dealers on the 2014 Ford F-a hundred and fifty and Chevrolet Silverado full-size pickup trucks. But Eastern automakers Toyota Motor Corp and Honda Motor Co , two corporations that historically have shied faraway from incentives, are also heavily discounting their fashionable mid-size household sedans, which like the enormous trucks were hit onerous by way of the weather-caused slowdown.