Here, he's also the main antagonist where he goes as a ruthless billionaire who makes a living destroying old buildings (some contains great history) to plan on building skyscrapers and shopping malls. He was going to destroy the Steinmetz Firehouse, home of Mrs. Steinmetz, the aunt of Tennessee Steinmetz, the mechanic of Herbie in The Love Bug, but got foiled by Herbie and many of his friends, including other Volkswagens. In this incarnation, he's renamed Alonzo A. Hawk, probably by mistake.
List of Hawk-inspired characters in other productions
In the 1976 The Shaggy D.A., sequel to 1959The Shaggy Dog, Keenan Wynn portrays another ruthless billionnaire character, named John Slade, which is a lookalike of Hawk in both behavior and look. It remains unknown why Disney didn't simply reuse the name of Alonzo Hawk, as the name is the only difference between Slade and Hawk.
Other Hawk-inspired characters in Disney movies
Wikipedia also lists two other characters who aren't exactly Alonzo Hawk but seem to have been somehow inspired by him; the first being Martin Ridgeway from 1972 Snowball Express, another bad banker played by Keenan Wynn, but less dishonest than Hawk; and the second (and the only animated one) being J. J. Wagstaff from Fluppy Dogs.
Alonzo Hawk about to destroy the Steinmetz Firehouse
Alonzo Hawk in Son of Flubber
Alonzo Hawk trying to kidnap Herbie
Alonzo Hawk's defeat in The Absent-Minded Professor