Toyota Friday slashed its full-year net profit forecast by more than half as Japan\'s biggest automaker grapples with a strong yen, the impact of the March earthquake and record flooding in Thailand. The company cut its outlook to 180 billion yen ($2.3 billion), well down from its estimate in August of a 390 billion yen profit, which was yanked as a result of the the Thai floods, which forced plant closures and supply-chain problems.