Okla. Stat. tit. 12, § 12-141: Actions for damages by motor vehicles or watercraft

The venue of civil actions for damages resulting from the use or

operation of motor vehicles, or resulting from the operation of

boats or other watercraft in the waters of this state, wherein the

defendant or defendants resided in the State of Oklahoma at the time

of injury, shall be, at the option of the plaintiff or plaintiffs,

in either of the following:

1. In any county of Oklahoma where service of summons can be

obtained upon one or more of the defendants as now provided by law.

2. In any county where the damages or a part thereof were

sustained.

The plaintiff or plaintiffs may cause summons to issue to any county

in Oklahoma for service upon one or more of the defendants. When

service of summons upon one or more of the defendants cannot be

obtained in Oklahoma with the exercise of due diligence, service may

then be secured upon such defendant or defendants, as now or

hereafter provided in Chapter 59, 47 O.S. 1961, for service upon

nonresident motorists.