Cut vegetables, garlic, and onion into large chunks, and puree in batches in a blender or food processor, adding some of the olive oil to each batch.
Strain through a sieve into a large bowl to remove skins and seeds.
Add lime juice, Worcestershire sauce, salt and pepper to taste, Tabasco, horseradish, and vodka, if desired. Cover and chill at least 2 hours, or overnight. Taste before serving; adjust seasonings if necessary. The amount of lime juice needed will depend on the acidity of the tomatoes.
Ladle into soup bowls, and place about 1/4 cup of crabmeat in the center. Grate additional fresh horseradish over surface of soup, if desired, and serve immediately.