744 P.2d 347 BRET BLACKBURN, ET AL, Respondents, v. SAFECO INSURANCE COMPANY, Appellant. Nos. 10638-8-II; 11309-1-II.The Court of Appeals of Washington, Division Two. October 5, 1987. [1] Insurance — Underinsured Motorist — Exclusions — Insured Vehicle — Validity. An underinsured motorist provision excluding from the definition of an underinsured vehicle any vehicle for which the […]