Puzzle

 ACROSS

  1 Tapenade ingredient

  6 Start of a Web address

 10 "Read my ___!"

 14 Rot

 15 Honolulu's island

 16 Loafing around

 17 *Egocentric truck tankful? (note each starred answer's middle letters)

 19 Cain's brother

 20 Back talk

 21 Frequently, poetically

 22 Small river

 24 Adams who played Lois Lane

 26 Simple card game

 27 Org. that checks boarding passes

 28 *Geocentric international concern?

 34 Commotion

 35 Sticky

 36 1/500 of a ream

 39 Lively dance

 41 Opposing vote

 42 Slice, as a turkey

 43 Terminate a relationship

 44 Sound in a bucket

 46 Lead-in to "whiz" or "whillikers"

 47 *Heliocentric athletic outfit?

 50 Dance style with a soft-shoe variety

 52 The One in "The Matrix"

 53 Green prefix

 54 Black Sea port city

 56 Noted seashell seller

 58 Actress Hayworth

 62 Exit ___ (election data source)

 63 *Anthropocentric jet type?

 66 Guthrie who sang "Alice's Restaurant"

 67 Unwelcome task

 68 A high-top sneaker covers it

 69 Fervor

 70 Dozes (off)

 71 Bedbugs and such

DOWN

  1 Chances

  2 "Star Wars" general Organa

  3 Chills, as champagne

  4 Feudal tenant

  5 Place for a contact

  6 "The Tao of Pooh" author

  7 Completely stretched

  8 ___ End

  9 Object detected with a radio telescope

 10 Bad romantic partner

 11 Words said before taking off

 12 Defendants' appeals

 13 DuVernay film about Martin Luther King Jr.

 18 True blue

 23 "How fashionable!"

 25 Explosive power units

 26 "Son of a ..."

 28 Back of the neck

 29 Japanese noodle

 30 March snaps, perhaps?

 31 Reaches a cost of

 32 Blue-green shades

 33 Puzzle solver's cry

 37 Even once

 38 Be overrun (with)

 40 "Somethin' 'Bout a Truck" singer Moore

 45 Scoffing look

 48 "Because I said so," e.g.

 49 As an example

 50 Gem that's eight on the Mohs scale

 51 Really love

 55 Schedule segment

 56 Tater

 57 Gas brand with collectible toy trucks

 59 Signs, as a deal

 60 ___-A-Whirl

 61 Gets 100% on

 64 Game with Skip cards

 65 It sticks to a stick

Solution