CHARLOTTE, N.C. -- NASCAR driver Brian Vickers is responding positively to treatment for blood clots in his legs and near his lungs.
Red Bull Racing says the 26-year-old is "progressing well" after being hospitalized in Washington last week. Vickers has been meeting with specialists and his physician since returning to Charlotte.
Vickers is still undergoing evaluation. Red Bull says Vickers remains in good spirits, though his return to racing is uncertain.
"Brian Vickers remains the driver of record" of the No. 83 car, NASCAR spokesman Ramsey Poston said Tuesday. "We have not been approached about a driver change. If a driver change is requested, the decision would be made at the discretion of the series director."
Vickers and Red Bull Racing general manager Jay Frye will address the situation Friday at Charlotte Motor Speedway.
Casey Mears served as Vickers' replacement in last weekend's race at Dover, finishing 22nd.
Information from The Associated Press was used in this report.