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| Tesla and Nvidia shares fall amid driverless car doubts | Tesla and Nvidia shares fall amid driverless car doubts |
| (about 9 hours later) | |
| Shares in Tesla and California chipmaker Nvidia dived on Tuesday amid fresh worries about the promise of self-driving car technology. | |
| The concerns added to a wider technology sell-off that saw US markets reverse gains notched on Monday as fears of a global trade war receded. | The concerns added to a wider technology sell-off that saw US markets reverse gains notched on Monday as fears of a global trade war receded. |
| The tech rich Nasdaq index plunged more than 200 points or nearly 2.9%. | The tech rich Nasdaq index plunged more than 200 points or nearly 2.9%. |
| The S&P 500 lost 1.73% to 2,612.6 points, while the Dow Jones shed 1.43% to 23,857.7. | The S&P 500 lost 1.73% to 2,612.6 points, while the Dow Jones shed 1.43% to 23,857.7. |
| Nvidia - a supplier of autonomous driving technology - was among the biggest losers after the company said it had halted self-driving tests on public roads. | Nvidia - a supplier of autonomous driving technology - was among the biggest losers after the company said it had halted self-driving tests on public roads. |
| Shares, which rose precipitously last year, closed down almost 7.8% | Shares, which rose precipitously last year, closed down almost 7.8% |
| Nvidia's decision follows a fatal crash this month involving a self-driving Uber car in Arizona. | Nvidia's decision follows a fatal crash this month involving a self-driving Uber car in Arizona. |
| On Monday evening the state said it would bar Uber from future tests until a federal probe is concluded. Other firms, such as Toyota, have also said they will scale back testing on public roads. | On Monday evening the state said it would bar Uber from future tests until a federal probe is concluded. Other firms, such as Toyota, have also said they will scale back testing on public roads. |
| Questions about car safety also dogged Tesla, after US safety regulators said they were investigating a fatal accident involving one of its vehicles. | Questions about car safety also dogged Tesla, after US safety regulators said they were investigating a fatal accident involving one of its vehicles. |
| The National Transportation Safety Board said it is examining the fire that occurred after the accident and looking to determine if the autopilot system had been active. | The National Transportation Safety Board said it is examining the fire that occurred after the accident and looking to determine if the autopilot system had been active. |
| Tesla shares sank more than 8% to less than $280, the lowest price in about a year. | Tesla shares sank more than 8% to less than $280, the lowest price in about a year. |
| Nvidia and Tesla were among high-flying stocks last year, when markets surged in part due to expectations of deregulation and corporate tax cuts. | Nvidia and Tesla were among high-flying stocks last year, when markets surged in part due to expectations of deregulation and corporate tax cuts. |
| Their course has been more turbulent this year, as investors grapple with trade tensions, potential rate rises by the US Federal Reserve and other factors. | Their course has been more turbulent this year, as investors grapple with trade tensions, potential rate rises by the US Federal Reserve and other factors. |
| Facebook and Google's owner Alphabet were also down about 5% on Tuesday, amid ongoing concerns about data privacy protections. | Facebook and Google's owner Alphabet were also down about 5% on Tuesday, amid ongoing concerns about data privacy protections. |