WASHINGTON (Reuters) - Apple Inc is wading in to the debate over regulation of self-driving cars, declaring it is excited about the potential for automated transportation and calling on U.S. regulators not to restrict testing of such vehicles.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=bxEjjM1Icf0:6McKuSrqynA:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=bxEjjM1Icf0:6McKuSrqynA:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=bxEjjM1Icf0:6McKuSrqynA:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=bxEjjM1Icf0:6McKuSrqynA:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=bxEjjM1Icf0:6McKuSrqynA:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/bxEjjM1Icf0" height="1" width="1" alt="" />