Surveillance video from a nearby business shows McKethan was biking across Capitol around 11:30 p.m. A westbound driver swerved around McKethan, then an eastbound vehicle hit him head-on. He died a short time later at the hospital.
McKethan’s girlfriend Lillie Blissetti said he was riding his bike home, but never made it. Instead, she was woken up by police.
"There was nothing else they could do for James," she said.
A makeshift memorial of balloons and messages of love and memories cover this tree in front of McKethan's home.
"The block started it so my daughter and them finished it," said Blissetti.
His family and friends gathered in disbelief.
"I'm still in shock," said Blissetti.
Blissetti said McKethan was a father of three and a friend of many.
"James lived a good life, James had fun, James loved kids," she said.
"He's going to be remembered as one of a kind, lovable, unforgettable," said McKethan’s cousin, Leslie Tabor.
Back at the scene, the striking vehicle, a four-door dark-colored car took off. Milwaukee police are after the person behind the wheel. Blissetti said there's only one way his family will have closure.
"I know you guys can't return him to us, but please just turn yourself in," she said.
McKethan’s family plans to gather at 64th and Capitol at 7:45 p.m. Tuesday night for a candlelight vigil. Those who knew him are invited to attend.
The family has set up a GoFundMe page to raise money for funeral costs.