More than half of U.S. adults are uncomfortable with self-driving vehicle technology and would be unlikely to use it on a daily basis (though younger Americans are more positive).

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Data: Northeastern University/Gallup survey conducted Sept. 15-Oct. 10, 2017; Chart: Axios Visuals

Why it matters: Many automakers — ranging from the largest car companies to newer entrants like Waymo and Tesla — are making big bets on autonomous driving technology, which is also expected to help drive the expansion of electric vehicles. Public hesitation could hamper widespread commercial deployment of both technologies in the years and decades ahead.

The Northeastern University/Gallup survey from last year and released today finds that 59 percent of respondents said they would be uncomfortable riding in a fully self-driving car on a daily basis, and 62 percent said they would be uncomfortable sharing the road with fully self-driving trucks.

Yes, but: The pollsters said Americans may be underestimating their willingness to adopt the emerging autonomous technology. Their analysis notes that in a Gallup survey in 2000, almost a quarter of adults said they would never get a cell phone, but that technology is obviously ubiquitous now.

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How "naked ballots" could upend mail-in voting in Pennsylvania

Trump signs in Olyphant, Penn. Photo: Eric Baradat/AFP via Getty Images

Pennsylvania's Supreme Court ordered state officials last week to throw out mail-in ballots submitted without a required inner "secrecy" envelope in November's election, the Philadelphia Inquirer reports.

The state of play: The decision went under the radar alongside the simultaneous decision to extend the time that mail-in ballots could be counted, but Philadelphia's top elections official warned state legislators this week that throwing out so-called "naked ballots" could bring "electoral chaos" to the state and cause "tens of thousands of votes" to be thrown out — potentially tipping the presidential election.

Commission releases topics for first presidential debate

Moderator Chris Wallace. Photo: Drew Angerer/Getty Images

Fox News anchor Chris Wallace has selected what topics he'll cover while moderating the first presidential debate between President Trump and former Vice President Joe Biden next week.

What to watch: Topics for the Sept. 29 debate will include Trump and Biden's records, the Supreme Court, COVID-19, economic policy, racism and the integrity of the election, the Commission for Presidential Debates announced on Tuesday. Each topic will receive 15 minutes of conversation and will be presented in no particular order.

Fed chair warns economy will feel the weight of expired stimulus

Treasury Secretary Steven Mnuchin and Fed Chair Jay Powell bump elbows before House hearing on Tuesday. Photo: Joshua Roberts/Pool/AFP via Getty Images

Federal Reserve Chairman Jerome Powell told the House Financial Services Committee on Tuesday that the expiration of Congress' coronavirus stimulus will weigh on the U.S. economy.

Why it matters: Powell warned that the effects of dried-up benefits are a looming risk to the economy, even if the consequences aren't yet visible.

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