CUSTOMER SERVICEBy Subrat Patnaik and Noel Randewich (Reuters) - Tesla Inc blew past $500 billion in market value on Tuesday as investors snapped up its shares in the run-up to its debut in the S&P 500, extending a meteoric rally that has seen it surge over 500% this year. The California electric carmaker's stock rose nearly 5%, putting its market capitalization at $519 billion. Tesla is Wall Street's seventh most valuable company, just behind Berkshire Hathaway , and its shares have rallied over 30% since Nov. 16, when it was announced Tesla would join the S&P 500 benchmark. Index...…CUSTOMER SERVICEBy Subrat Patnaik and Noel Randewich (Reuters) - Tesla Inc blew past $500 billion in market value on Tuesday as investors snapped up its shares in the run-up to its debut in the S&P 500, extending a meteoric rally that has seen it surge over 500% this year. The California electric carmaker's stock rose nearly 5%, putting its market capitalization at $519 billion. Tesla is Wall Street's seventh most valuable company, just behind Berkshire Hathaway , and its shares have rallied over 30% since Nov. 16, when it was announced Tesla would join the S&P 500 benchmark. Index...WW…