Dumas v. State, 812 S.W.2d 611 (Tex.App.—Dallas 1991, pet. ref’d).

Valles v. State, 817 S.W.2d 138 (Tex.App.—El Paso 1991, no pet.).

Irion v. State, 703 S.W.2d 362 (Tex.App.—Austin 1986, no pet.).

Testimony of arresting officer alone = sufficient to convict DWI.