Tesla reports fourth-quarter and full-year results, says Model 3 on track

SAN FRANCISCO — Tesla Inc. lost $674.9 million on $7 billion in sales last year and lost $121.3 million for the fourth quarter on $2.2 billion in sales, the company said Wednesday. Annual revenue rose 73 percent thanks to 76,230 deliveries of the company’s Model S and Model X electric luxury vehicles. Given the company’s grand…