 Complete the following phrase:  There is little sign that Edouard Ballot himself took much interest in automobiles until December 1918. That was the month in which he had a significant conversation with René Thomas, a leading racing driver who had won the 1914 Indianapolis 500 race driving a Delage. Ballot was persuaded to build four 4.8-litre cars that would carry the Ballot name and compete in the forthcoming Indianapolis 500 race, scheduled for 30 May 1919. Time seemed very short, but Ballot lost no time, notably recruiting the Swiss born engineer Ernest Henry who had already worked on preparing Peugeot cars for their successful participation in the 1914 Indianapolis 500 race. Ballots cars competed in the 1919 race, two of them finishing in 4th and 11th places. Ballot was sufficiently encouraged to return the next year, and in the 